232 NINTH ANNUAL REPORT OF 



The summary, which I will now pi-esent, uives the mean for each 

 month at or before sunrise, when it is the coldest, or at noon, when it 

 is warmest, and at eleven in the evening ; the mean temperature of 

 the month, computed from two daily observations ; also, the warmest 

 and the coldest mornings in each month, and the warmest and coldest 

 days at noon, with the range of the thermometer. It embraces a 

 period of fourteen months — from December, 1850, to January, 1852, 

 inclusive. 



December, 1850. — Sunrise 43.29 degrees Farenheit ; noon 54.13; 

 11 p. m. 45.39. Monthly temperature 48.71. Coldest morning 28, 

 warmest morning, 54 ; coldest noon 38, warmest noon 64 ; range 36. 



January, 1851. — Sunrise 41.68 ; noon 56.94; 11 p. m. 44.90. 

 Monthly temperature 49.31. Coldest morning 30, warmest morning 

 56 ; coldest noon 50, warmest noon 64 ; range 34. 



February, 1851. — Sunrise 41.97 ; noon 60.03 ; 11 p. m. 43.64. 

 Monthly temperature 51. Coldest morning 33, warmest morning 52; 

 coldest j;ioon 55, warmest noon 71 ; range 38. 



March, 1851. — Sunrise 44; noon 63.68; 11 p. m. 44.84. Monthly 

 temperature 53.84. Coldest morning 34, warmest morning 50 ; cold- 

 est noon 53, warmest noon 74 ; range 40. 



April, 1851.— Sunrise 48.20; noon 67.27; 11 p. m. 49.80. Monthly 

 temperature 57.73. Coldest morning 42, warmest morning 56 ; cold- 

 est noon 57, warmest noon 84; range 42. 



May, 1851.— Sunrise 49.58 ; noon 64.32 ; 11 p. m. 50.42. Monthly 

 temperature 55.95. Coldest morning 45, warmest morning 54 ; cold- 

 est noon 57, warmest noon 71 ; range 26. 



June, 1851.— Sunrise 50.90 ; noon 66.73 ; lip. m. 51.80. Monthly 

 temperature 58.81. Coldest morning 49, warmest morning 56 ; cold- 

 est noon 60, warmest noon 78 ; range 29. 



July, 1851. — Sunrise 51.50; noon 64.32; 11 p. m. 52.10. Monthly 

 temperature 57.91. Coldest morning 47, warmest morning 54; cold- 

 est noon 60, warmest noon 73 ; range 26. 



August, 1851. — Sunrise 54.97 ; noon 69.45 ; 11 p. m. 56.06. 

 Monthly temperature 62.21. Coldest morning 50, warmest morning 

 66 ; coldest noon 63, warmest noon 82 ; range 32. 



September, 1851. — Sunrise 53.97 ; noon 69.27 ; 11 p. m. 54.20. 

 Monthl}^ temperature 61.62. Coldest morning 50, warmest morning 

 63 ; coldest noon 64, warmest noon 75 ; range 25. . 



October, J851. — Sunrise 53.36; noon 70.42; 11 p. m. 55.45. 

 Monthly temperature 61.89. Coldest morning 47, warmest morning 

 60 ; coldest noon 60, warmest noon 83 ; range 36. 



November, 1851. — Sunrise 48.93; noon 63.60; 11 p. m. 51.90. 

 Monthly temperature 56.26. Coldest morning 41, warmest morning 

 57 ; coldest noon 52, warmest noon 73 ; range 32. 



December, 1851. — Sunrise 46.10; noon 56.55; 11 p. m. 48.26. 

 Monthly temperature 51.32. Coldest morning 35, warmest morning 

 58; coldest noon 51, warmest noon 61 ; range 26. 



January, 1852. — Sunrise 44.61 ; noon 56.97 ; 11 p. m. 49.39. 

 Monthly temperature 50.79. Coldest morning 35, warmest morning 

 52 ; coldest noon 50, warmest noon 64 ; range 29. 



For the year 1851 : Sunrise 48.76 ; noon 64.38 ; 11 p. m. 50.28. 



